| ⇦ | 
| ⇨ |
How many moles of iodine are liberated when 1 mole of potassium dichromate reacts with potassium iodide
Options
(a) 1
(b) 2
(c) 3
(d) 4
Correct Answer:
3
Explanation:
Iodine is liberated from potassium iodide.
K₂Cr₂O₇ + 4H₂SO₄ → K₂ SO₄+ Cr₂(SO₄)₃ + 4H₂O+ 3[O]
[2KI + H₂SO₄+[O] → K₂ SO₄ + I₂ +H₂O] ⨯ 3 /
[ K₂Cr₂O₇ + 6KI + 7H₂ SO₄ → 4K₂ SO₄+ Cr₂(SO₄)₃ + 7H₂O + 3I₂].
Related Questions: - Identify the molecule that has zero dipole moment
- The volume of water to be added to N/2 HCl to prepare 500 cm³ of N/10 solution is
- In the extraction of aluminium from bauxite, cryolite is used to
- Replacement of Cl of chlorobenzene to give phenol requires drastic conditions.
- Which one of the following moleculescontains no π bond?
Topics: Hydrogen and Redox Reactions
(174)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Identify the molecule that has zero dipole moment
- The volume of water to be added to N/2 HCl to prepare 500 cm³ of N/10 solution is
- In the extraction of aluminium from bauxite, cryolite is used to
- Replacement of Cl of chlorobenzene to give phenol requires drastic conditions.
- Which one of the following moleculescontains no π bond?
Topics: Hydrogen and Redox Reactions (174)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply